﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication2
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                DropDownList1.Items.Add("新华社");
                DropDownList1.Items.Add("中国新闻社");
                DropDownList1.Items.Add("人民日报出版社");
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string s = TextArea1.InnerText;
            if (string.IsNullOrEmpty(s))
            {
                Label3.Text = "请输入新闻内容";
            }
            else
            {
                Label3.Text = $"此新闻来自 {DropDownList1.SelectedValue} 谢谢您提交的新闻";
                Label4.Text = DateTime.Now.ToString("D");
            }
            
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            TextArea1.InnerText = "";
            Label4.Text = "";
            Label3.Text = "请输入新闻内容";
            DropDownList1.SelectedValue = "新华社";
        }
    }
}